CN112652921B - DC power socket and power plug - Google Patents

DC power socket and power plug Download PDF

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Publication number
CN112652921B
CN112652921B CN202011478362.3A CN202011478362A CN112652921B CN 112652921 B CN112652921 B CN 112652921B CN 202011478362 A CN202011478362 A CN 202011478362A CN 112652921 B CN112652921 B CN 112652921B
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China
Prior art keywords
electrically connected
mos tube
power socket
terminal
power
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CN202011478362.3A
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Chinese (zh)
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CN112652921A (en
Inventor
涂宏俊
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Shanghai Simcom Wireless Solutions Co Ltd
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Shanghai Simcom Wireless Solutions Co Ltd
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Priority to CN202011478362.3A priority Critical patent/CN112652921B/en
Publication of CN112652921A publication Critical patent/CN112652921A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/04—Pins or blades for co-operation with sockets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

The invention discloses a direct-current power socket and a power plug, wherein the direct-current power socket comprises a first input end, a second input end, a first output end, a second output end, a detection end and a switching circuit; when the second output end and the detection end are disconnected, the switching circuit is in a first state; when the second output end and the detection end are short-circuited, the switching circuit is in a second state; when the switching circuit is in the first state, the first input end is electrically connected with the second output end, and the second output end is electrically connected with the first output end; when the switching circuit is in the second state, the first input end is electrically connected with the first output end, and the second output end is electrically connected with the second output end. According to the direct-current power socket and the power plug provided by the invention, the switching circuit is arranged, so that the power plug can be inserted into the direct-current power socket in a positive and negative two-way manner and can normally work on the premise that pins of the direct-current power socket are not increased.

Description

DC power socket and power plug
Technical Field
The invention relates to the technical field of electronic components, in particular to a direct-current power socket and a power plug.
Background
In order to ensure that the positive pole of the plug is connected with the positive pole of the circuit board and the negative pole of the plug is connected with the negative pole of the circuit board after the plug is inserted into the interface in the using process, the structure of the socket is usually limited so that the plug can only be inserted in one direction; or although the plug can be inserted in two directions through the double rows of symmetrical pins or elastic sheets, for example, one of USB interfaces, namely, USB Type-C interface, poor contact or pin short circuit is easily caused due to the increased number of pins or elastic sheets.
Disclosure of Invention
The invention aims to overcome the defect that a direct current power socket in the prior art does not support bidirectional plug-in without adding pins, and provides a direct current power socket and a power plug supporting bidirectional plug-in.
The invention solves the technical problems through the following technical scheme:
the invention provides a direct-current power socket which is characterized by comprising a first input end, a second input end, a first output end, a second output end, a detection end and a switching circuit, wherein the first input end is connected with the second input end;
the first input end is a positive electrode, and the second input end is a negative electrode;
when the second output end and the detection end are disconnected, the switching circuit is in a first state;
when the second output end and the detection end are short-circuited, the switching circuit is in a second state;
when the switching circuit is in the first state, the first input end is electrically connected with the second output end, and the second input end is electrically connected with the first output end;
when the switching circuit is in the second state, the first input end is electrically connected with the first output end, and the second input end is electrically connected with the second output end.
Preferably, the switching circuit includes a first MOS (Metal-Oxide-Semiconductor) transistor, a second MOS transistor, a third MOS transistor, a fourth MOS transistor, a first resistor, and a battery;
the source electrode of the first MOS tube and the drain electrode of the fourth MOS tube are electrically connected with the second input end;
the drain electrode of the second MOS tube and the drain electrode of the third MOS tube are electrically connected with the first input end;
the grid electrodes of the first MOS tube, the second MOS tube, the third MOS tube and the fourth MOS tube are electrically connected, and are electrically connected with one end of the first resistor;
the other end of the first resistor is electrically connected with the positive electrode of the battery, and the negative electrode of the battery is grounded;
the first output end is electrically connected with the drain electrode of the first MOS tube;
the first output end is electrically connected with a source electrode of the second MOS tube;
the second output end is electrically connected with the source electrode of the third MOS tube;
the second output end is electrically connected with the source electrode of the fourth MOS tube.
Preferably, the dc power socket further includes a protection circuit, and the protection circuit includes a first capacitor and a second resistor;
one end of the first capacitor is electrically connected with the detection end, the other end of the first capacitor is electrically connected with one end of the second resistor, and the other end of the second resistor is electrically connected with the grid electrodes of the first MOS transistor, the second MOS transistor, the third MOS transistor and the fourth MOS transistor.
Preferably, the first output end and the second output end are located at two sides of the jack of the dc power socket in opposite directions, and the first output end and the detection end are located at the same side of the jack in opposite directions.
Preferably, the first output end is located on a far side of the jack from the second output end, and the second output end and the detection end are located on a far side of the jack from the first output end.
The invention also provides a power plug, which is matched with the direct-current power socket and comprises a long-side terminal and a short-side terminal, wherein the long-side terminal is a negative electrode, and the short-side terminal is a positive electrode; the connection mode of the power plug and the direct current power socket comprises a first direction connection and a second direction connection.
Preferably, when the power plug and the dc power socket are connected in the first direction, the long-side terminal is connected to a first output terminal of the dc power socket, the short-side terminal is connected to a second output terminal of the dc power socket, and a detection terminal of the dc power socket is in an empty state.
Preferably, when the power plug and the dc power socket are connected in the second direction, the short side terminal is connected to the first output terminal of the dc power socket, and the long side terminal is simultaneously connected to the second output terminal of the dc power socket and the detection terminal of the dc power socket.
Preferably, the power plug includes a male end and a female end.
The positive progress effects of the invention are as follows: compared with the prior art, the direct-current power socket and the power plug provided by the invention have the advantages that the switching circuit is arranged, so that the power plug can be inserted into the socket in a positive and negative two-way manner and can normally work on the premise that pins are not added to the direct-current power socket.
Drawings
Fig. 1 is a schematic circuit diagram of a dc power socket in embodiment 1.
Fig. 2 is a schematic view of an internal structure of a dc power outlet according to embodiment 2.
Fig. 3 is a schematic structural diagram of a power plug in embodiment 3.
Fig. 4 is a schematic view of a first connection mode of the power plug in embodiment 3.
Fig. 5 is a schematic view of a second connection mode of the power plug in embodiment 3.
Fig. 6 is a schematic view of the connection between the dc power socket and the power plug in the first direction according to embodiment 3.
Fig. 7 is a schematic diagram illustrating the connection between the dc power socket and the power plug in the second direction according to embodiment 3.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the invention thereto.
Example 1
Referring to fig. 1, the present embodiment provides a dc power socket 101, where the dc power socket 101 includes a first input terminal 1, a second input terminal 2, a first output terminal 3, a second output terminal 4, a detection terminal 5, and a switching circuit 15;
for ease of understanding, fig. 1 illustrates switching circuit 15 as a dashed box.
When the second output terminal 4 and the detection terminal 5 are disconnected, the switching circuit 15 is in a first state;
when the second output terminal 4 and the detection terminal 5 are short-circuited, the switching circuit 15 is in a second state;
when the switching circuit 15 is in the first state, the first input terminal 1 is electrically connected with the second output terminal 4, and the second input terminal 2 is electrically connected with the first output terminal 3;
when the switching circuit 15 is in the second state, the first input terminal 1 is electrically connected to the first output terminal 3, and the second input terminal 2 is electrically connected to the second output terminal 4.
In this embodiment, the switching circuit 15 includes a first MOS transistor 6, a second MOS transistor 7, a third MOS transistor 8, a fourth MOS transistor 9, a first resistor 11, and a battery 10;
the first MOS tube 6 and the third MOS tube 8 are N-channel MOS tubes;
the second MOS transistor 7 and the fourth MOS transistor 9 are P-channel MOS transistors.
The source electrode of the first MOS tube 6 and the drain electrode of the fourth MOS tube 9 are electrically connected with the second input end 2;
the drain electrode of the second MOS tube 7 and the drain electrode of the third MOS tube 8 are electrically connected with the first input end 1;
the grid electrodes of the first MOS tube 6, the second MOS tube 7, the third MOS tube 8 and the fourth MOS tube 9 are electrically connected, and are electrically connected with one end of a first resistor 11;
the other end of the first resistor 11 is electrically connected with the positive electrode of the battery 10, and the negative electrode of the battery 10 is grounded;
the first output end 3 is electrically connected with the drain electrode of the first MOS tube 6;
the first output end 3 is electrically connected with a source electrode of the second MOS tube 7;
the second output end 4 is electrically connected with the source electrode of the third MOS tube 8;
the second output terminal 4 is electrically connected with the source electrode of the fourth MOS transistor 9.
In this embodiment, the dc power socket includes a protection circuit, and the protection circuit includes a first capacitor 12 and a second resistor 13;
one end of the first capacitor 12 is electrically connected with the detection end 5, the other end of the first capacitor 12 is electrically connected with one end of the second resistor 13, and the other end of the second resistor 13 is electrically connected with the gates of the first MOS transistor 6, the second MOS transistor 7, the third MOS transistor 8 and the fourth MOS transistor 9.
When a power plug is not inserted, the detection end 5 is in an idle state, the grids of the four MOS tubes are connected to the positive electrode of the battery 10 through the first resistor 11, the first MOS tube 6 is connected, the second MOS tube 7 is disconnected, the third MOS tube 8 is connected, and the fourth MOS tube 9 is disconnected. The second input 2 is connected to the first output 3; the first input 1 is connected to the second output 4. The positive pole of the Power plug 103 is connected to the Power end of the circuit, and the negative pole is connected to the GND end of the circuit.
The direct-current power socket provided by the embodiment can ensure that the corresponding power plug can be inserted in a positive and negative two-way and normally works on the premise that the pins of the direct-current power socket are not increased by setting the switching circuit.
Example 2
Referring to fig. 2, in the present embodiment, a dc power socket is provided, the first output terminal 3 and the second output terminal 4 are oppositely located at two sides of the insertion hole 17 of the dc power socket, and the first output terminal 3 and the detection terminal 5 are oppositely located at the same side of the insertion hole 17.
In this embodiment, the first output terminal 3 is located on the far side of the jack 17 from the second output terminal 4, and the second output terminal 4 and the detection terminal 5 are located on the far side of the jack 17 from the first output terminal 3.
The direct-current power socket provided by the embodiment can ensure that the corresponding power plug can be inserted in a positive and negative two-way mode and normally works on the premise that the pins of the direct-current power socket are not increased by the aid of the switching circuit.
Example 3
Referring to fig. 3, the present embodiment provides a power plug 103, which is matched with the dc power socket in the previous embodiment, and the connection manner of the dc power socket 101 is taken as an example. The power plug 103 includes a long side terminal 18 and a short side terminal 19, and the connection manner of the power plug 103 and the dc power socket 101 includes a first direction connection and a second direction connection.
In the present embodiment, referring to fig. 4, when the power plug 103 and the dc power socket 101 are connected in the first direction, the long-side terminal 18 is connected to the first output terminal 3, the short-side terminal 19 is connected to the second output terminal 4, and the detection terminal 5 is in an empty state. At this time, referring to fig. 6, the gates of the four MOS transistors are all connected to the positive electrode of the battery 10 through the first resistor 11, and at this time, the first MOS transistor 6 is turned on, the second MOS transistor 7 is turned off, the third MOS transistor 8 is turned on, and the fourth MOS transistor 9 is turned off. The second input 2 is connected to the first output 3; the first input 1 is connected to the second output 4. The positive pole of the Power plug 103 is communicated with the Power end of the circuit, and the negative pole is communicated with the GND end of the circuit.
In the present embodiment, as shown in fig. 5, when the power plug 103 and the dc power socket 101 are connected in the second direction, the short-side terminal 19 is connected to the first output terminal, and the long-side terminal 18 is simultaneously connected to the second output terminal 4 and the detection terminal 5. At this time, referring to fig. 7, after the circuit detects that the detection end 5 is connected to the negative electrode of the plug, the gates of the four MOS transistors are pulled low, at this time, the first MOS transistor is turned off, the second MOS transistor is turned on, the third MOS transistor is turned off, and the fourth MOS transistor is turned on. The positive electrode of the Power plug 103 is communicated with the Power end of the circuit, and the negative electrode is communicated with the GND end of the circuit.
In this embodiment, the power plug 103 is applied to a USB interface. According to the description of the embodiment and technical means in the art, those skilled in the art can implement the USB interface, and details are not described here.
The power plug provided by the embodiment can ensure that the corresponding power plug can be inserted in a positive and negative two-way manner and normally works on the premise that the pins of the direct-current power socket are not increased by arranging the long and short side terminals.
In the above embodiments, the long-side terminals of the power plug are all negative electrodes, and the short-side terminals are positive electrodes; the first input terminal is a Power (+) terminal, and the second input terminal is a GND (-) terminal; if the positive and negative poles of the long and short side terminals are opposite, the detection end is correspondingly moved to one side of the first output end, and the detection logic of the switching circuit at the rear end is correspondingly changed.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims (8)

1. A DC power socket is characterized in that the DC power socket comprises a first input end, a second input end, a first output end, a second output end, a detection end and a switching circuit;
the first input end is a positive electrode, and the second input end is a negative electrode;
when the second output end and the detection end are disconnected, the switching circuit is in a first state;
when the second output end and the detection end are short-circuited, the switching circuit is in a second state;
when the switching circuit is in the first state, the first input end is electrically connected with the second output end, and the second input end is electrically connected with the first output end;
when the switching circuit is in the second state, the first input end is electrically connected with the first output end, and the second input end is electrically connected with the second output end;
the switching circuit comprises a first MOS tube, a second MOS tube, a third MOS tube, a fourth MOS tube, a first resistor and a battery;
the source electrode of the first MOS tube and the drain electrode of the fourth MOS tube are electrically connected with the second input end;
the drain electrode of the second MOS tube and the drain electrode of the third MOS tube are electrically connected with the first input end;
the grid electrodes of the first MOS tube, the second MOS tube, the third MOS tube and the fourth MOS tube are electrically connected, and are electrically connected with one end of the first resistor;
the other end of the first resistor is electrically connected with the positive electrode of the battery, and the negative electrode of the battery is grounded;
the first output end is electrically connected with the drain electrode of the first MOS tube;
the first output end is electrically connected with a source electrode of the second MOS tube;
the second output end is electrically connected with the source electrode of the third MOS tube;
the second output end is electrically connected with the source electrode of the fourth MOS tube.
2. The dc power outlet of claim 1, wherein the dc power outlet comprises a protection circuit, the protection circuit further comprising a first capacitor, a second resistor;
one end of the first capacitor is electrically connected with the detection end, the other end of the first capacitor is electrically connected with one end of the second resistor, and the other end of the second resistor is electrically connected with the grid electrodes of the first MOS transistor, the second MOS transistor, the third MOS transistor and the fourth MOS transistor.
3. The dc power socket as set forth in claim 1, wherein said first output terminal and said second output terminal are located opposite to each other on both sides of a jack of said dc power socket, and said first output terminal and said detection terminal are located opposite to each other on the same side of said jack.
4. A dc power socket according to claim 3, wherein said first output terminal is located on a side of said jack farther from said second output terminal, and said second output terminal and said detection terminal are located on a side of said jack farther from said first output terminal.
5. A power plug that mates with the dc power outlet of claim 1, the power plug comprising a long side terminal that is negative and a short side terminal that is positive; the connection mode of the power plug and the direct current power socket comprises a first direction connection and a second direction connection.
6. The power plug according to claim 5, wherein when the power plug and the dc power socket are connected in the first direction, the long-side terminal is connected to a first output terminal of the dc power socket, the short-side terminal is connected to a second output terminal of the dc power socket, and a detection terminal of the dc power socket is in an empty state.
7. The power plug of claim 5, wherein when the power plug and the dc power socket are connected in the second direction, the short side terminal is connected to a first output terminal of the dc power socket, and the long side terminal is simultaneously connected to a second output terminal of the dc power socket and a detection terminal of the dc power socket.
8. The power plug of claim 5, wherein the power plug includes a male end and a female end.
CN202011478362.3A 2020-12-15 2020-12-15 DC power socket and power plug Active CN112652921B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011478362.3A CN112652921B (en) 2020-12-15 2020-12-15 DC power socket and power plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011478362.3A CN112652921B (en) 2020-12-15 2020-12-15 DC power socket and power plug

Publications (2)

Publication Number Publication Date
CN112652921A CN112652921A (en) 2021-04-13
CN112652921B true CN112652921B (en) 2022-08-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011478362.3A Active CN112652921B (en) 2020-12-15 2020-12-15 DC power socket and power plug

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10001799B2 (en) * 2014-03-24 2018-06-19 Nokia Technologies Oy Pull-down circuitry for an apparatus
CN106961059A (en) * 2016-01-12 2017-07-18 深圳市黑羽科技有限公司 Two-sided identification switching circuit and magnetic connector applied to magnetic connector
CN106253639B (en) * 2016-08-31 2019-06-21 广东百事泰电子商务股份有限公司 Positive anti-plug can recognize power supply device and intelligent charger
CN109713488B (en) * 2019-02-28 2023-12-08 深圳和而泰智能家电控制器有限公司 Connector with a plurality of connectors

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